TearLab Corporation operates as an in-vitro diagnostic company in the United States. It offers TearLab Osmolority System, a proprietary in vitro diagnostic tear testing platform that measures tear film osmolarity for the diagnosis of dry eye disease. The company s system enables eye care practitioners to test for sensitive and specific biomarkers using nanoliters of tear film at the point-of-care. Its TearLab Osmolarity System consists of TearLab disposable, which is a single-use microfluidic microchip; TearLab pen, which is a hand-held device that interfaces with the TearLab disposable; and TearLab reader, which is a small desktop unit that allows for the docking of the TearLab pen, as well as provides a quantitative reading for the operator. The company was formerly known as OccuLogix, Inc. TearLab Corporation was founded in 1996 and is headquartered in San Diego, California.